u300-ril-information.c - platform/vendor/st-ericsson/u300 - Gitiles

 /* ST-Ericsson U300 RIL
  *
  * Copyright (C) ST-Ericsson AB 2008-2010
  * Copyright 2006, The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  * Based on reference-ril by The Android Open Source Project.
  *
  * Heavily modified for ST-Ericsson U300 modems.
  * Author: Christian Bejram <christian.bejram@stericsson.com>
  */

 #include <stdio.h>
 #include <pthread.h>
 #include <string.h>
 #include <assert.h>
 #include <cutils/properties.h>

 #include "u300-ril-information.h"
 #include "u300-ril-network.h"
 #include "u300-ril.h"
 #include "at_tok.h"

 #define LOG_TAG "RILV"
 #include <utils/Log.h>

 bool g_shutdownCompleted; /* Static allowed - uncontrolled */

 /*****************************************************/
 /* Controlled static state variables - section start */
 /*****************************************************/

 /*****************************************************/
 /* Controlled static state variables - section end   */
 /*****************************************************/

 /**
  * RIL_REQUEST_GET_IMSI
  */
 void requestGetIMSI(void *data, size_t datalen, RIL_Token t)
 {
     ATResponse *atresponse = NULL;
     int err;

     err = at_send_command_numeric("AT+CIMI", &atresponse);

     if (err < 0 || atresponse->success == 0)
         RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
     else {
         RIL_onRequestComplete(t, RIL_E_SUCCESS,
                               atresponse->p_intermediates->line,
                               sizeof(char *));
     }
     at_response_free(atresponse);
     return;
 }

 /* RIL_REQUEST_DEVICE_IDENTITY
  *
  * Request the device ESN / MEID / IMEI / IMEISV.
  *
  */
 void requestDeviceIdentity(void *data, size_t datalen, RIL_Token t)
 {
     ATResponse *atresponse = NULL;
     char *response[4];
     char *line = NULL;
     int svn;
     int err;

     response[0] = NULL;
     response[1] = NULL;
     response[2] = ""; /* CDMA not supported */
     response[3] = ""; /* CDMA not supported */

     /* IMEI */
     err = at_send_command_numeric("AT+CGSN", &atresponse);

     if (err < 0 || atresponse->success == 0)
         goto error;
     asprintf(&response[0], "%s", atresponse->p_intermediates->line);

     at_response_free(atresponse);
     atresponse = NULL;

     /* IMEISV */
     err = at_send_command_singleline("AT*ESVN?", "*ESVN:", &atresponse);
     if (err < 0 || atresponse->success == 0)
         goto finally;

     line = atresponse->p_intermediates->line;

     err = at_tok_start(&line);
     if (err < 0)
         goto finally;

     err = at_tok_nextint(&line, &svn);
     if (err == 0)
         asprintf(&response[1], "%02d", svn);

 finally:
     RIL_onRequestComplete(t, RIL_E_SUCCESS, &response, sizeof(response));
     goto exit;

 error:
     RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

 exit:
     at_response_free(atresponse);
     if (response[0] != NULL)
         free(response[0]);
     if (response[1] != NULL)
         free(response[1]);
     return;
 }

 /**
  * Deprecated!
  * RIL_REQUEST_GET_IMEI
  *
  * Get the device IMEI, including check digit.
  */
 void requestGetIMEI(void *data, size_t datalen, RIL_Token t)
 {
     ATResponse *atresponse = NULL;
     int err;

     err = at_send_command_numeric("AT+CGSN", &atresponse);

     if (err < 0 || atresponse->success == 0)
         RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
     else {
         RIL_onRequestComplete(t, RIL_E_SUCCESS,
                               atresponse->p_intermediates->line,
                               sizeof(char *));
     }
     at_response_free(atresponse);
     return;
 }

 /**
  * Deprecated!
  * RIL_REQUEST_GET_IMEISV
  *
  * Get the device IMEISV, which should be two decimal digits.
  */
 void requestGetIMEISV(void *data, size_t datalen, RIL_Token t)
 {
     ATResponse *atresponse = NULL;
     char *response = NULL;
     char *line = NULL;
     int svn;
     int err;

     err = at_send_command_singleline("AT*ESVN?", "*ESVN:", &atresponse);
     if (err < 0 || atresponse->success == 0)
         goto error;

     line = atresponse->p_intermediates->line;

     err = at_tok_start(&line);
     if (err < 0)
         goto error;

     err = at_tok_nextint(&line, &svn);
     if (err < 0 )
         goto error;

     asprintf(&response, "%02d", svn);
     RIL_onRequestComplete(t, RIL_E_SUCCESS, response, sizeof(char *));
     goto exit;

 error:
     RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

 exit:
     at_response_free(atresponse);
     if (response != NULL)
         free(response);
     return;
 }

 /**
  * RIL_REQUEST_RADIO_POWER
  *
  * Toggle radio on and off (for "airplane" mode).
  */
 void requestRadioPower(void *data, size_t datalen, RIL_Token t)
 {
     int onOff;
     int err;
     ATResponse *atresponse = NULL;
     const char *property = "sys.shutdown.requested";
     char systemShutdown[PROPERTY_VALUE_MAX + 1];
     int getRet = -1;

     if(datalen < sizeof(int))
         goto error;

     onOff = ((int *) data)[0];

     if (onOff == 0 && getCurrentState() != RADIO_STATE_OFF) {

         /*
          * Check Android system property if system is shutting down.
          * Note: Android sets sys.shutdown.requested=0 when shutting down.
          */
         getRet = property_get(property, systemShutdown, NULL);

         if (getRet > 0 && !strncmp(systemShutdown, "0", 1)) {
             /* Modem shutdown */
             LOGI("Android shutdown received. Shutting down modem.");
             err = at_send_command("AT+CFUN=100", &atresponse);
             if (err < 0 || atresponse->success == 0)
                 LOGE("Failed to perform modem shutdown");

             /* loop until MID reports that modem is shut down */
             while (g_shutdownCompleted == false) {
                 usleep(100*1000);
             }
         } else {
             /* Turn radio off */
             err = at_send_command("AT+CFUN=4", &atresponse);
         }

         if (err < 0 || atresponse->success == 0)
             goto error;
         setRadioState(RADIO_STATE_OFF);
     } else if (onOff > 0 && getCurrentState() == RADIO_STATE_OFF) {
         err = at_send_command("AT+CFUN=99", &atresponse);
         if (err < 0 || atresponse->success == 0) {
             LOGW("AT+CFUN=99 failed, falling back to AT+CFUN=1");
             at_response_free(atresponse);
             err = at_send_command("AT+CFUN=1", &atresponse);
             if (err < 0 || atresponse->success == 0)
                 goto error;
         }
         setRadioState(RADIO_STATE_SIM_NOT_READY);
     } else {
         LOGE("Erroneous input to requestRadioPower()!");
         goto error;
     }

     RIL_onRequestComplete(t, RIL_E_SUCCESS, NULL, 0);

 finally:
     at_response_free(atresponse);
     return;
 error:
     RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
     goto finally;
 }

 /**
  * Queries the signal strength and sends the signal strength
  * as Unsolicited response to Android.
  */
 void pollAndDispatchSignalStrength(void *param)
 {
     RIL_SignalStrength signalStrength;

     if (querySignalStrength(&signalStrength))
         RIL_onUnsolicitedResponse(RIL_UNSOL_SIGNAL_STRENGTH,
                                   &signalStrength, sizeof(RIL_SignalStrength));
 }

 bool changeScreenState(int screenState)
 {
     bool res = true;

     getScreenStateLock();

     setScreenState(screenState);
     if (screenState == 1) {
         /* Screen is on - be sure to enable all unsolicited notifications. */
 #ifdef LTE_COMMAND_SET_ENABLED
         if (at_send_command("AT+CEREG=2", NULL) < 0)
             goto error;
         if (at_send_command("AT+CREG=2", NULL) < 0)
 #else
         if (at_send_command("AT*EREG=2", NULL) < 0)
 #endif
             goto error;
         if (at_send_command("AT+CGREG=2", NULL) < 0)
             goto error;
         if (at_send_command("AT*EPSB=1", NULL) < 0)
             goto error;
         if (at_send_command("AT+CMER=3,0,0,1", NULL) < 0)
             goto error;
         /*
          * Android will not poll for update of signal strength after switch of
          * screen state, we need to poll to update screen signal strength bar.
          */
         enqueueRILEvent(CMD_QUEUE_AUXILIARY, pollAndDispatchSignalStrength,
                         NULL, NULL);
         /* Trigger a rehash of network values, just to be sure. */
         RIL_onUnsolicitedResponse(RIL_UNSOL_RESPONSE_NETWORK_STATE_CHANGED,
                                   NULL, 0);
     } else if (screenState == 0) {
         /* Screen is off - disable all unsolicited notifications. */
 #ifdef LTE_COMMAND_SET_ENABLED
         if (at_send_command("AT+CEREG=0", NULL) < 0)
 #include <stdlib.h>
             LOGI("Failed to disable CEREG notifications");
         if (at_send_command("AT+CREG=0", NULL) < 0)
             LOGI("Failed to disable CREG notifications");
 #else
         if (at_send_command("AT*EREG=0", NULL) < 0)
             LOGI("Failed to disable EREG notifications");
 #endif
         if (at_send_command("AT+CGREG=0", NULL) < 0)
             LOGI("Failed to disable CGREG notifications");
         if (at_send_command("AT*EPSB=0", NULL) < 0)
             LOGI("Failed to disable EPSB notifications");
         if (at_send_command("AT+CMER=3,0,0,0", NULL) < 0)
             LOGI("Failed to disable CMER notifications");
     } else {
         /* Not a defined value - error. */
         goto error;
     }

     goto exit;

 error:
     LOGE("%s failed to change screen state subscriptions", __func__);
     res = false;

 exit:
     releaseScreenStateLock();
     return res;
 }

 void requestScreenState(void *data, size_t datalen, RIL_Token t)
 {
     int screenState;

     if (datalen < sizeof(int))
         goto error;

     screenState = ((int *) data)[0];

     if(!changeScreenState(screenState))
         goto error;

     RIL_onRequestComplete(t, RIL_E_SUCCESS, NULL, 0);
     goto exit;

 error:
     LOGE("ERROR: requestScreenState failed");
     RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

 exit:
     return;
 }

 /**
  * RIL_REQUEST_BASEBAND_VERSION
  *
  * Return string value indicating baseband version, eg
  * response from AT+CGMR.
  */
 void requestBasebandVersion(void *data, size_t datalen, RIL_Token t)
 {
     int err;
     ATResponse *atresponse = NULL;
     ATLine *atline;
     char *line;

     err = at_send_command_with_echo("AT+CGMR", &atresponse);

     if (err < 0 ||
             atresponse->success == 0 || atresponse->p_intermediates == NULL)
         goto error;

     /* When local echo is enabled, first line contains "AT+CGMR" echoed
      * back by the modem. This line needs to be skipped.
      */
     for (atline = atresponse->p_intermediates;
             atline->p_next; atline = atline->p_next) {
         LOGW("CGMR: Skipping local echo.");
     }

     line = atline->line;
     /* The returned value is used by Android in a system property.
      * The RIL should have no knowledge about this, but since Android
      * system properties only allow values with length < 90 and causes an
      * exception if the length of the returned string is > 90 this needs to
      * be checked here.
      * Todo:  Until Android implements limit handling on the string we need
      * to have a workaround in the RIL to chop the string.
      */
     if (strlen(line) > 90)
         line[90] = '\0';

     RIL_onRequestComplete(t, RIL_E_SUCCESS, line, sizeof(char *));

 finally:
     at_response_free(atresponse);
     return;

 error:
     LOGE("Error in requestBasebandVersion()");
     RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
     goto finally;
 }

 void onResetModemStateInformation(int resetState)
 {
     /* NOTE: Function is called in DEFAULT queueRunner context! */

     LOGI("%s() starting", __func__);

     switch (resetState) {
     case RESET_START:
         /*
          * Issued prior to AT channels are recreated and shall therefore NOT
          * initiate modem communication!
          * -> Reset any internal static state variables and report to Android if
          *    nessasary.
          */
         break;
     case RESET_AT_INITIALIZED:
         /*
          * Issued when AT channels are available and before SIM is booted and
          * unlocked.
          * -> Re-setup modem and Android with internal static state variables
          *    which cannot be reset after modem restart.
          */
         break;
     case RESET_SIM_READY:
         /*
          * Issued after SIM is unlocked.
          * -> Re-setup modem with internal static state variables which
          *    cannot be reset before SIM is unlocked.
          */
         break;
     default:
         LOGE("%s() received unknown resetState. Fatal error!", __func__);
         assert(0);
     }
 }
	/* ST-Ericsson U300 RIL
	*
	* Copyright (C) ST-Ericsson AB 2008-2010
	* Copyright 2006, The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	* Based on reference-ril by The Android Open Source Project.
	*
	* Heavily modified for ST-Ericsson U300 modems.
	* Author: Christian Bejram <christian.bejram@stericsson.com>
	*/

	#include <stdio.h>
	#include <pthread.h>
	#include <string.h>
	#include <assert.h>
	#include <cutils/properties.h>

	#include "u300-ril-information.h"
	#include "u300-ril-network.h"
	#include "u300-ril.h"
	#include "at_tok.h"

	#define LOG_TAG "RILV"
	#include <utils/Log.h>

	bool g_shutdownCompleted; /* Static allowed - uncontrolled */

	/*****************************************************/
	/* Controlled static state variables - section start */
	/*****************************************************/

	/*****************************************************/
	/* Controlled static state variables - section end */
	/*****************************************************/

	/**
	* RIL_REQUEST_GET_IMSI
	*/
	void requestGetIMSI(void *data, size_t datalen, RIL_Token t)
	{
	ATResponse *atresponse = NULL;
	int err;

	err = at_send_command_numeric("AT+CIMI", &atresponse);

	if (err < 0 \|\| atresponse->success == 0)
	RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
	else {
	RIL_onRequestComplete(t, RIL_E_SUCCESS,
	atresponse->p_intermediates->line,
	sizeof(char *));
	}
	at_response_free(atresponse);
	return;
	}

	/* RIL_REQUEST_DEVICE_IDENTITY
	*
	* Request the device ESN / MEID / IMEI / IMEISV.
	*
	*/
	void requestDeviceIdentity(void *data, size_t datalen, RIL_Token t)
	{
	ATResponse *atresponse = NULL;
	char *response[4];
	char *line = NULL;
	int svn;
	int err;

	response[0] = NULL;
	response[1] = NULL;
	response[2] = ""; /* CDMA not supported */
	response[3] = ""; /* CDMA not supported */

	/* IMEI */
	err = at_send_command_numeric("AT+CGSN", &atresponse);

	if (err < 0 \|\| atresponse->success == 0)
	goto error;
	asprintf(&response[0], "%s", atresponse->p_intermediates->line);

	at_response_free(atresponse);
	atresponse = NULL;

	/* IMEISV */
	err = at_send_command_singleline("ATESVN?", "ESVN:", &atresponse);
	if (err < 0 \|\| atresponse->success == 0)
	goto finally;

	line = atresponse->p_intermediates->line;

	err = at_tok_start(&line);
	if (err < 0)
	goto finally;

	err = at_tok_nextint(&line, &svn);
	if (err == 0)
	asprintf(&response[1], "%02d", svn);

	finally:
	RIL_onRequestComplete(t, RIL_E_SUCCESS, &response, sizeof(response));
	goto exit;

	error:
	RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

	exit:
	at_response_free(atresponse);
	if (response[0] != NULL)
	free(response[0]);
	if (response[1] != NULL)
	free(response[1]);
	return;
	}

	/**
	* Deprecated!
	* RIL_REQUEST_GET_IMEI
	*
	* Get the device IMEI, including check digit.
	*/
	void requestGetIMEI(void *data, size_t datalen, RIL_Token t)
	{
	ATResponse *atresponse = NULL;
	int err;

	err = at_send_command_numeric("AT+CGSN", &atresponse);

	if (err < 0 \|\| atresponse->success == 0)
	RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
	else {
	RIL_onRequestComplete(t, RIL_E_SUCCESS,
	atresponse->p_intermediates->line,
	sizeof(char *));
	}
	at_response_free(atresponse);
	return;
	}

	/**
	* Deprecated!
	* RIL_REQUEST_GET_IMEISV
	*
	* Get the device IMEISV, which should be two decimal digits.
	*/
	void requestGetIMEISV(void *data, size_t datalen, RIL_Token t)
	{
	ATResponse *atresponse = NULL;
	char *response = NULL;
	char *line = NULL;
	int svn;
	int err;

	err = at_send_command_singleline("ATESVN?", "ESVN:", &atresponse);
	if (err < 0 \|\| atresponse->success == 0)
	goto error;

	line = atresponse->p_intermediates->line;

	err = at_tok_start(&line);
	if (err < 0)
	goto error;

	err = at_tok_nextint(&line, &svn);
	if (err < 0 )
	goto error;

	asprintf(&response, "%02d", svn);
	RIL_onRequestComplete(t, RIL_E_SUCCESS, response, sizeof(char *));
	goto exit;

	error:
	RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

	exit:
	at_response_free(atresponse);
	if (response != NULL)
	free(response);
	return;
	}

	/**
	* RIL_REQUEST_RADIO_POWER
	*
	* Toggle radio on and off (for "airplane" mode).
	*/
	void requestRadioPower(void *data, size_t datalen, RIL_Token t)
	{
	int onOff;
	int err;
	ATResponse *atresponse = NULL;
	const char *property = "sys.shutdown.requested";
	char systemShutdown[PROPERTY_VALUE_MAX + 1];
	int getRet = -1;

	if(datalen < sizeof(int))
	goto error;

	onOff = ((int *) data)[0];

	if (onOff == 0 && getCurrentState() != RADIO_STATE_OFF) {

	/*
	* Check Android system property if system is shutting down.
	* Note: Android sets sys.shutdown.requested=0 when shutting down.
	*/
	getRet = property_get(property, systemShutdown, NULL);

	if (getRet > 0 && !strncmp(systemShutdown, "0", 1)) {
	/* Modem shutdown */
	LOGI("Android shutdown received. Shutting down modem.");
	err = at_send_command("AT+CFUN=100", &atresponse);
	if (err < 0 \|\| atresponse->success == 0)
	LOGE("Failed to perform modem shutdown");

	/* loop until MID reports that modem is shut down */
	while (g_shutdownCompleted == false) {
	usleep(100*1000);
	}
	} else {
	/* Turn radio off */
	err = at_send_command("AT+CFUN=4", &atresponse);
	}

	if (err < 0 \|\| atresponse->success == 0)
	goto error;
	setRadioState(RADIO_STATE_OFF);
	} else if (onOff > 0 && getCurrentState() == RADIO_STATE_OFF) {
	err = at_send_command("AT+CFUN=99", &atresponse);
	if (err < 0 \|\| atresponse->success == 0) {
	LOGW("AT+CFUN=99 failed, falling back to AT+CFUN=1");
	at_response_free(atresponse);
	err = at_send_command("AT+CFUN=1", &atresponse);
	if (err < 0 \|\| atresponse->success == 0)
	goto error;
	}
	setRadioState(RADIO_STATE_SIM_NOT_READY);
	} else {
	LOGE("Erroneous input to requestRadioPower()!");
	goto error;
	}

	RIL_onRequestComplete(t, RIL_E_SUCCESS, NULL, 0);

	finally:
	at_response_free(atresponse);
	return;
	error:
	RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
	goto finally;
	}

	/**
	* Queries the signal strength and sends the signal strength
	* as Unsolicited response to Android.
	*/
	void pollAndDispatchSignalStrength(void *param)
	{
	RIL_SignalStrength signalStrength;

	if (querySignalStrength(&signalStrength))
	RIL_onUnsolicitedResponse(RIL_UNSOL_SIGNAL_STRENGTH,
	&signalStrength, sizeof(RIL_SignalStrength));
	}

	bool changeScreenState(int screenState)
	{
	bool res = true;

	getScreenStateLock();

	setScreenState(screenState);
	if (screenState == 1) {
	/* Screen is on - be sure to enable all unsolicited notifications. */
	#ifdef LTE_COMMAND_SET_ENABLED
	if (at_send_command("AT+CEREG=2", NULL) < 0)
	goto error;
	if (at_send_command("AT+CREG=2", NULL) < 0)
	#else
	if (at_send_command("AT*EREG=2", NULL) < 0)
	#endif
	goto error;
	if (at_send_command("AT+CGREG=2", NULL) < 0)
	goto error;
	if (at_send_command("AT*EPSB=1", NULL) < 0)
	goto error;
	if (at_send_command("AT+CMER=3,0,0,1", NULL) < 0)
	goto error;
	/*
	* Android will not poll for update of signal strength after switch of
	* screen state, we need to poll to update screen signal strength bar.
	*/
	enqueueRILEvent(CMD_QUEUE_AUXILIARY, pollAndDispatchSignalStrength,
	NULL, NULL);
	/* Trigger a rehash of network values, just to be sure. */
	RIL_onUnsolicitedResponse(RIL_UNSOL_RESPONSE_NETWORK_STATE_CHANGED,
	NULL, 0);
	} else if (screenState == 0) {
	/* Screen is off - disable all unsolicited notifications. */
	#ifdef LTE_COMMAND_SET_ENABLED
	if (at_send_command("AT+CEREG=0", NULL) < 0)
	#include <stdlib.h>
	LOGI("Failed to disable CEREG notifications");
	if (at_send_command("AT+CREG=0", NULL) < 0)
	LOGI("Failed to disable CREG notifications");
	#else
	if (at_send_command("AT*EREG=0", NULL) < 0)
	LOGI("Failed to disable EREG notifications");
	#endif
	if (at_send_command("AT+CGREG=0", NULL) < 0)
	LOGI("Failed to disable CGREG notifications");
	if (at_send_command("AT*EPSB=0", NULL) < 0)
	LOGI("Failed to disable EPSB notifications");
	if (at_send_command("AT+CMER=3,0,0,0", NULL) < 0)
	LOGI("Failed to disable CMER notifications");
	} else {
	/* Not a defined value - error. */
	goto error;
	}

	goto exit;

	error:
	LOGE("%s failed to change screen state subscriptions", __func__);
	res = false;

	exit:
	releaseScreenStateLock();
	return res;
	}

	void requestScreenState(void *data, size_t datalen, RIL_Token t)
	{
	int screenState;

	if (datalen < sizeof(int))
	goto error;

	screenState = ((int *) data)[0];

	if(!changeScreenState(screenState))
	goto error;

	RIL_onRequestComplete(t, RIL_E_SUCCESS, NULL, 0);
	goto exit;

	error:
	LOGE("ERROR: requestScreenState failed");
	RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);

	exit:
	return;
	}

	/**
	* RIL_REQUEST_BASEBAND_VERSION
	*
	* Return string value indicating baseband version, eg
	* response from AT+CGMR.
	*/
	void requestBasebandVersion(void *data, size_t datalen, RIL_Token t)
	{
	int err;
	ATResponse *atresponse = NULL;
	ATLine *atline;
	char *line;

	err = at_send_command_with_echo("AT+CGMR", &atresponse);

	if (err < 0 \|\|
	atresponse->success == 0 \|\| atresponse->p_intermediates == NULL)
	goto error;

	/* When local echo is enabled, first line contains "AT+CGMR" echoed
	* back by the modem. This line needs to be skipped.
	*/
	for (atline = atresponse->p_intermediates;
	atline->p_next; atline = atline->p_next) {
	LOGW("CGMR: Skipping local echo.");
	}

	line = atline->line;
	/* The returned value is used by Android in a system property.
	* The RIL should have no knowledge about this, but since Android
	* system properties only allow values with length < 90 and causes an
	* exception if the length of the returned string is > 90 this needs to
	* be checked here.
	* Todo: Until Android implements limit handling on the string we need
	* to have a workaround in the RIL to chop the string.
	*/
	if (strlen(line) > 90)
	line[90] = '\0';

	RIL_onRequestComplete(t, RIL_E_SUCCESS, line, sizeof(char *));

	finally:
	at_response_free(atresponse);
	return;

	error:
	LOGE("Error in requestBasebandVersion()");
	RIL_onRequestComplete(t, RIL_E_GENERIC_FAILURE, NULL, 0);
	goto finally;
	}

	void onResetModemStateInformation(int resetState)
	{
	/* NOTE: Function is called in DEFAULT queueRunner context! */

	LOGI("%s() starting", __func__);

	switch (resetState) {
	case RESET_START:
	/*
	* Issued prior to AT channels are recreated and shall therefore NOT
	* initiate modem communication!
	* -> Reset any internal static state variables and report to Android if
	* nessasary.
	*/
	break;
	case RESET_AT_INITIALIZED:
	/*
	* Issued when AT channels are available and before SIM is booted and
	* unlocked.
	* -> Re-setup modem and Android with internal static state variables
	* which cannot be reset after modem restart.
	*/
	break;
	case RESET_SIM_READY:
	/*
	* Issued after SIM is unlocked.
	* -> Re-setup modem with internal static state variables which
	* cannot be reset before SIM is unlocked.
	*/
	break;
	default:
	LOGE("%s() received unknown resetState. Fatal error!", __func__);
	assert(0);
	}
	}